Add html builder macro docs.

Author: yajra

documentation.md

@@ -66,6 +66,7 @@
 	- [Builder](/docs/{{package}}/{{version}}/html-builder)
 	- [Table](/docs/{{package}}/{{version}}/html-builder-table)
 	- [Columns](/docs/{{package}}/{{version}}/html-builder-column)
+	- [Macro](/docs/{{package}}/{{version}}/html-builder-macro)
 	- [Ajax](/docs/{{package}}/{{version}}/html-builder-ajax)
 	- [Parameters](/docs/{{package}}/{{version}}/html-builder-parameters)
 	- [Events/Callbacks](/docs/{{package}}/{{version}}/html-builder-callbacks)

html-builder-macro.md

@@ -0,0 +1,31 @@
+# Html Builder Macro
+
+You can extend DataTables HTML Builder using `macro`.
+
+## Example macro:
+```php
+use Yajra\Datatables\Html\Builder;
+use Yajra\Datatables\Html\Column;
+
+Builder::macro('addEditColumn', function () {
+	$attributes = [
+		'title'          => 'Edit',
+		'data'           => 'edit',
+		'name'           => '',
+		'orderable'      => false,
+		'searchable'     => false,
+	];
+
+	$this->collection->push(new Column($attributes));
+
+	return $this;
+});
+
+```
+
+## Usage
+```php
+$builder = new Builder;
+$builder->addEditColumn()->ajax()->parameters([]);
+
+```

html-installation.md

@@ -4,7 +4,7 @@
 
 Run the following command in your project to get the latest version of the plugin:
 
-`composer require yajra/laravel-datatables-html:^1.0`
+`composer require yajra/laravel-datatables-html:^2.0`
 
 Open the file ```config/app.php``` and then add following service provider.